Car-bolster and the method of making the same.



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E. I. nonns. GAB. BOLSTER AND THE METHOD OF MAKING THE SAME.

APPLICATION FILED JULY 31, 1905.

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PATENTED JULY 3, 1906.

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APPL'IOATION FILED JULY 31, 1905.

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PATENTED JULY 3, 1906.

E. I. DODDS.

GAR BOLSTER AND THE METHOD OF MAKING THE SAME.

APPLICATION FILED JULY 31, 1905.

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ITED STATES PATENT OFFICE.

ETHAN I. DODDS, OF PULLMAN, ILLINOIS, ASSIGNOR TO THE PULLMAN COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

Specification of Letters Patent.

Patented July 3, 1906.

Application filed July 31,1905. Serial No. 272,049.

To all whom it may concern.-

Be it known that I, ETHAN I. DODDS, a citizen of the United States, residing at Pullman, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Car-Bolsters and the Methods of Making the Same, of which the following is a specification.

I have devised a sheet-metal car bolster or sill and a method of manufacturing the same which I believe to constitute an improvement in the art by reason of its simplicity and economy of manufacture and because of the fact that in making the body-bolster no cutting is required, and but very little shearing needed inmaking the truck-bolster. Abolster or sill constructed according to my method has the additional advantage of having its sides integral with the bottom for their entire length, and in order to dispose of the surplus metal at the ends so as to make the sides of the structure bellied in form I press tapering ribs out of the plane of the metal sheet and form the parts to shape by means of dies. All of these operations may be performed simultaneously or successively, as desired, and the metal may be worked hot or cold, but preferably cold, since by so doing the sheet can be more easily handled and there is no fuel expense for heating it.

On the accompanying drawings I have illustrated bolsters involving my invention and also blanks from which the bolsters may be made.

Figure 1 is a perspective view of a truckbolster constructed according to my method. Fig. 2 is a longitudinal vertical section of both body and truck bolsters. Fig. 3 is an end view of both bolsters. Fig. 4 is a central vertical transverse section of both bolsters. Fig. 5 is the blank from which the body-bolster is made, and Fig. 6 is the blank from which the truck-bolster is made.

Referring first to Fig. 5, the body-bolster is made from a rectangular sheet of metal 10 by turning over the longitudinal edges along the lines 11 11 to form outwardly-extending flanges 17 when the sides are bent to place. In order to make the outer longitudinal portions of the sheet, which are to form the sides of the bolster, bellied in form and to take up the surplus metal, I press out of the plane of each two tapering integral ribs 20, one at each end, by bending inwardly the metal on the lines 12, which are parallel, and on the lines 13 which converge toward each other. These tapering ribs may be converging toward the center of the sheet, as shown in Fig. 6, if desired. The sides of the bolster are formed by bending up the sheet on the lines 14 14, and the bottom is formed to shape by bending on the transverse lines 15 to form the inclined portions 22 and bending on the transverse lines 16 to provide the horizontal end bottom portions 23. To the outwardly-extending flanges 17 is riveted a tension-plate 18, extending substantially the full length of the bolster. As filler-blocks I employ hollow spacing members 24, which may be cast in'a shape to receive the inturned ribs 20. To the lower side of the body-bolster is riveted a center bearing-plate 29, and cooperating with this plate is a bearing-plate 30, riveted to the top compression-plate 18 of the truck-bolster.

The truck-bolster blank shown in Fig. 6 diflers from the body-bolster blank only in being shorter and in the length of the parts which are to form the outwardly-extending flanges 17. The truck-bolster when formed to shape is similar to the body-bolster and comprises the bellied sides 19, with the tapering inturned ribs 20 the upper outwardlyextending flanges 17 to which are riveted the plates 18, and the bottom of the bolster comprises the central horizontal portion 21, the intermediate inclined portions 22 and the end horizontal portions 23. The sides are spaced apart by means ofhollow cast-metal filler-blocks 25 and 26, which have grooves on their sides to admit and fit the ribs on the sides of the bolster. The side guides 27, Fig. 1, are held to the sides of the bolster by means of bolts or rivets 28, which pass through the guides, the sides of the bolster, and the filler-blocks.

A bolster or sill constructed according to this method has the advantages of bellied sides with an integral bottom throughout, the same being produced from a standard sheet. of metal without any cutting, the surplus metal of the sides being bent inwardly out of the way and forming reinforcing-ribs.

Obvious mechanical changes in this construction and method would fall within the scope of the invention as defined by the following claims.

This patent is intended to embrace only so much of the disclosure made herein as is covered by the claims.

* I claim 1. The method of manufacturing a device of the character described, which consists in pressing out of the plane of a metal sheet one or more integral ribs extending from each end toward the central part of the sheet, and bending up the outer longitudinal portions of the sheet to form the sides of the structure, substantially as described.

2. The method of manufacturing a device of the character described, which consists in pressing out of the plane of a metal sheet one or more tapering ribs extending from each end toward the central part of the sheet to make the outer longitudinal ortions which are to comprise the sides 0 the structure bellied in shape, and bending up said outer longitudinal portions of the sheet to form the sides of the structure, substantially as described.

3. The method of manufacturing a device of the character described, which consists in pressing out of the plane of a sheet of metal an integral rib at each end of the outer longitudinal portions of the sheet, and bending up 'said outer longitudinal portions to form the sides of the structure, substantially as described.

4. The method of manufacturing adevice of the character described which consists in pressing out of the plane of a metal sheet a tapering rib at each end of the outer longitudinal portions of the sheet to make the parts which are to comprise the sides of the bolster bellied in shape, and bending up said outer longitudinal portions to form the sides of the bolster, substantially as described.

5. The method of manufacturing a device of the character described, which consists in pressing out of the plane of a metal sheet one or more integral ribs extending from each end toward the central part of the sheet, bending up the outer longitudinal portions of the sheet to form the sides of the bolster, and bending the central longitudinal portion of the sheet to form intermediate inclined and end horizontal bottom portions, substantially as described.

6. The method of manufacturing a device of the character described, which consists in pressing out of the plane of a metal sheet one or more tapering ribs extending from each end toward the central part of the sheet, to make the parts which are to comprise the sides of the bolster bellied in shape, bending up the outer longitudinal portions of the sheet to form the sides of the bolster, and bending the central longitudinal portion of the sheet to form intermediate inclined and end horizontal bottom portions, substantially as described.

7. The method of manufacturing a device of the character described, which consists in pressing out of the plane of a metal sheet an integral rib at each end of the outer longitudinal portions of said sheet, bending up said outer longitudinal portions to form the sides of the bolster, and bending the central longitudin al portion of the sheet to form intermediate inclined and end horizontal bottom portions, substantially as described.

8. The method of manufacturing a device of the character described, which consists in pressing out of the plane of a metal sheet an integral tapering rib at each end of the outer longitudinal portions of said sheet, to make the parts which are to comprise the sides of the bolster bellied in shape, bending up said outer longitudinal portions to form the sides of the bolster, and bending the central longitudinal portion of the sheet to form intermediate inclined and end horizontal bottom portions, substantially as described.

9. The method of manufacturing a device of the character described, which consists in pressing out of the plane of a metal sheet an integral rib in each end of the outer longitudinal portions of said sheet, bending over the longitudinal edges of the sheet to form flanges, and bending up said outer longitudinal portions to form the sides of the bolster, substantially as described.

10. The method of manufacturing a device of the character described, which consists in pressing out of the plane of a metal sheet one or more integral tapering ribs extending from each end toward the central part of the sheet, to make the parts which are to comprise the sides of the bolster bellied in shape, bending over the longitudinal edges of the sheet to form flanges, bending up the outer longitudinal portions of the sheet to form the sides of the bolster, and bending the central longitudinal portion of the sheet to form intermediate inclined and end horizontal bottom portions, substantially as described.

11. A device of the character described having sides, each with an integral rib pressed out of the plane thereof, and a tie-plate integral with said sides, substantially as described.

12. A device of the character described having sides, each with an integral tapering rib pressed out of the plane thereof, and a tieplate integral with said sides, substantially as described.

13. A device of the character described hav-in sides, each with an integral rib pressed out o the plane thereof and with a flange along one edge, and a tieplate integral with said sides, substantially as described. v

14. A device of the character described having bellied side plates, each with an integral tapering rib at each end pressed inwardly out of the plane of the side, and a bottom integral with said sides, substantially as described.

15. A device of the character described having sides, each With an integral rib pressed tom integral With the sides having central out of the plane thereof and a bottom inteand end horizontal portions and intermediate gral with the sides, substantially as described. inclined portions, substantially as described. 10

16. A device of the character described ETHAN I. DODDS.

having bellied plate sides, each with an inte- Witnesses:

gral taperin rib at each end pressed in- FREDERICK C. GOODWIN,

Wardly out oi the plane of the side, and a botl WALTER M. FULLER. 

